I have a 2011 5.0 Mustang. It is consistently burning 3-4 quarts of oil per oil change. I am assuming this is normal since the car requires 8 quarts of super-light 5W-20 oil (like they designed the oil pan to be larger because the engine naturally burns a lot of oil)? Otherwise, Ford likely owes me a new motor. Or at least some seals.
It is considered normal per Ford and pretty much every other manufacturer.1 quart every 1000 miles is unacceptable imo. I agree that it cannot be good for the cats.
Hello BlackBuggy,I have a 2011 5.0 Mustang. It is consistently burning 3-4 quarts of oil per oil change. I am assuming this is normal since the car requires 8 quarts of super-light 5W-20 oil (like they designed the oil pan to be larger because the engine naturally burns a lot of oil)? Otherwise, Ford likely owes me a new motor. Or at least some seals.
I don't know his mileage but, the guy was a high performance partsman who worked at a speedparts store. I would have guessed a valve seals, rings would lose power and smoke alot too, hydraulic lifters worn not holding prime would lose power too.If straight weight oil quiets the engine down and improves power it's loose as hell and worn.
Multi weight oils are straight weights with additive packages to push their performance down to lower temperatures. So, 5W20 isn't 5 weight oil. It's 2o weight oil with additives to render 5 weight performance in cold weather but 20 weight performance at engine op 210 F.
Modern engines run very tight tolerances and pumping straight weight through them just adds windage loss with no gains.
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